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Apparatus and method for supporting soft handover in broadband wireless access communication system

A communication system, broadband wireless technology, applied in wireless communication, communication between multiple stations, transmission path sub-channel allocation, etc., can solve the problem of not providing sub-channel configuration scheme, impossible to provide sub-channel allocation, etc.

Inactive Publication Date: 2007-05-23
SAMSUNG ELECTRONICS CO LTD
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AI Technical Summary

Problems solved by technology

The same subchannel with the same subcarrier must be allocated to both sectors in order to provide soft handover, however, it is not possible to provide such subchannel allocation using the current FUSC scheme
In other words, the current communication system is proposed only for sub-channel allocation schemes for supporting FUSC and PUSC schemes, but does not provide a different sub-channel allocation scheme for supporting switching schemes

Method used

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  • Apparatus and method for supporting soft handover in broadband wireless access communication system
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  • Apparatus and method for supporting soft handover in broadband wireless access communication system

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Embodiment Construction

[0052] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the following description of the embodiments of the present invention, if a detailed description of known functions and configurations incorporated therein would obscure the subject matter of the present invention, they will not be described again.

[0053] The present invention provides a device and method for providing soft handover in an Orthogonal Frequency Division Multiple Access (OFDAM) communication system. The present invention proposes a sub-channel allocation scheme supporting soft handover and a method for managing an active set (active set) according to the sub-channel allocation scheme. An active set is defined as a group of sectors that provide wireless channels for data transmission / reception of a current Mobile Subscriber Station (MSS).

[0054] Furthermore, the present invention adopts a partially used subchannel (PUSC) scheme in ...

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Abstract

A method for supporting a handover in a Broadband Wireless Access communication system which includes a MSS, a serving BS, and a plurality of neighbor BSs, in which each of the BSs includes cells using sub-channel bands different from each other, the method including the steps of measuring, by the MSS, intensities of signals received from the serving BS and the neighbor BSs, and transmitting to the serving BS a request for a handover based on the measured signal intensities; and establishing a simultaneous connection with the serving BS and a target BS in a handover area, thereby performing a soft handover, wherein the serving BS and the target BS allocate the same sub-channel including the same sub-carriers to the MSS at the same time when the MSS performs the soft handover.

Description

technical field [0001] The present invention relates to a broadband wireless access communication system, more specifically, the present invention relates to a device and method for supporting soft handover in a broadband wireless access communication system adopting an OFDM scheme. Background technique [0002] A fourth generation (4G) communication system (next generation communication system) is being designed to provide users with services having various qualities of service (QoS) and supporting a transmission speed of approximately 100 Mbps. The current third generation (3G) communication system supports a transmission rate of about 384 kbps in an outdoor channel environment with relatively poor channel conditions, and supports a maximum transmission rate of 2 Mbps in an indoor channel environment with relatively favorable channel conditions. [0003] A wireless local area network (LAN) system and a wireless metropolitan area network (MAN) system generally support a tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04W36/18
CPCH04W36/18H04W36/185H04W36/00692H04L5/003H04W36/0061H04W36/06
Inventor 赵在源周判谕赵是竣林治雨张泳彬孟胜柱赵宰熙
Owner SAMSUNG ELECTRONICS CO LTD
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